期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 67, 期 39, 页码 10813-10822出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.9b03099
关键词
DBD plasma; plasma-activated tap water (PATW); plasma-activated seeds (PAS); seedling growth; improvement mechanism
资金
- Fundamental Research Funds for Central Universities [2232019A3-10]
- International Cooperative Projects of Shanghai Municipal Committee of Science and Technology [18230722800]
- National Natural Science Foundation of China [51578122, 51708096, 11475043]
Traditional seed pretreatment methods cause secondary pollution for the application of various chemicals. This study investigated the effect of dielectric barrier discharge (DBD) cold plasma on seedling growth. Effects of plasma-activated tap water (PATW) and plasma-activated seeds (PAS) were compared for germination rates, seedling height, dry weight, and chlorophyll content. Results show that compared with controls these growth parameters were all increased by more than 50%. The yields and contributions of hydrogen peroxide, nitrate, nitrite, and ammonium were quantified. Hydrogen peroxide and nitrate have an important role in seedling growth. By etching, the seed epidermis free radicals can reduce the apparent contact angle and increase the water absorption of the seeds. In addition to the low cost of PATW and PAS compared with commercial fertilizers, DBD does not involve any chemical addition. Thus, both PATW and PAS can be an alternative for improvement of agricultural production.
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